Messages in this thread | | | Date | Wed, 20 Feb 2013 19:31:54 +0800 | From | Simon Jeons <> | Subject | Re: [PATCH 1/2] mm: hotplug: implement non-movable version of get_user_pages() called get_user_pages_non_movable() |
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On 02/20/2013 06:23 PM, Lin Feng wrote: > Hi Simon, > > On 02/20/2013 05:58 PM, Simon Jeons wrote: >>> The other is that this almost certainly broken for transhuge page >>> handling. gup returns the head and tail pages and ordinarily this is ok >> When need gup thp? in kvm case? > gup just pins the wanted pages(for x86 is 4k size) of user address space in memory. > We can't expect the pages have been allocated for user address space are thp or > normal page. So we need to deal with them and I think it have nothing to do with kvm.
Ok, I'm curious about userspace process call which funtion(will call gup) to pin pages except make_pages_present?
> > thanks, > linfeng
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